<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/Home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input
            placeholder="请输入姓名"
            v-model="queryInfo.query"
            clearable
            @clear="getUserList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getUserList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true"
            >添加用户</el-button
          >
        </el-col>
      </el-row>
      <!-- 用户列表区域 -->
      <el-table :data="userlist" border stripe>
        <el-table-column label="#" type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <!-- 作用域插槽 scope.row可以获得该行的信息 -->
          <template v-slot="scope">
            <el-switch
              v-model="scope.row.mg_state"
              @change="userStateChanged(scope.row)"
            ></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.id)"
            ></el-button>
            <!-- 删除按钮 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeUserById(scope.row.id)"
            ></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip
              effect="dark"
              content="分配角色"
              placement="top"
              :enterable="false"
            >
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="setRole(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClosed"
    >
      <!-- model是数据绑定对象，rules是验证规则对象，prop代表验证规则，在rules中存放 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户的对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%" 
      @close="editDialogClosed">
      <!-- :rules对应下方的prop属性 -->
      <el-form ref="editFormRef" :model="editForm" :rules="editFormRules" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%"
      @close="setRoleDialogClosed">
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色:{{userInfo.role_name}}</p>
        <p>分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    var checkEmail = (rule, value, cb) => {
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/;
      if (regEmail.test(value)) return cb();
      cb(new Error("请输入合法的邮箱"));
    };
    var checkMobile = (rule, value, cb) => {
      const regMobile =
        /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/;
      if (regMobile.test(value)) return cb();
      cb(new Error("请输入合法的手机号"));
    };
    return {
      //获取用户列表的参数对象
      queryInfo: {
        query: "",
        //当前页数
        pagenum: 1,
        //当前每页显示多少条数据
        pagesize: 2,
      },
      userlist: [],
      total: 0,
      //控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      //控制修改用户对话框的显示与隐藏
      editDialogVisible:false,
      /* 添加用户的表单数据 */
      addForm: {
        username: "",
        password: "",
        email: "",
        mobile: "",
      },
      addFormRules: {
        username: [
          { required: true, message: "请输入用户名", trigger: "blur" },
          {
            min: 3,
            max: 10,
            message: "用户名的长度在3~10个字符之间",
            trigger: "blur",
          },
        ],
        password: [
          { required: true, message: "请输入密码", trigger: "blur" },
          {
            min: 6,
            max: 15,
            message: "密码的长度在6~15个字符之间",
            trigger: "blur",
          },
        ],
        email: [
          { required: true, message: "请输入邮箱", trigger: "blur" },
          { validator: checkEmail, trigger: "blur" },
        ],
        mobile: [
          { required: true, message: "请输入手机号", trigger: "blur" },
          { validator: checkMobile, trigger: "blur" },
        ],
      },
      /* 查询到的用户信息对象 */
      editForm:{},
      /* 修改表单的验证规则对象 */
      editFormRules:{
        email:[
          {required:true,message:'请输入用户邮箱',trigger:'blur'},
          {validator:checkEmail,trigger:'blur'}
        ],
        mobile:[
          {required:true,message:'请输入用户手机',trigger:'blur'},
          {validator:checkMobile,trigger:'blur'}
        ],
      },
      /* 控制分配角色对话框的显示隐藏 */
      setRoleDialogVisible:false,
      /* 需要被分配角色的用户信息 */
      userInfo:{},
      /* 所有角色的数据列表 */
      rolesList:[],
      /* 已选中的角色ID值 */
      selectedRoleId:''
    };
  },
  created() {
    this.getUserList();
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get("users", {
        params: this.queryInfo,
      });
      if (res.meta.status != 200)
        return this.$message.error("获取用户列表失败!");
      this.userlist = res.data.users;
      this.total = res.data.total;
    },
    /* 监听pagesize改变的事件 */
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize;
      this.getUserList();
    },
    /* 监听页码值改变的事件 */
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage;
      this.getUserList();
    },
    /* 监听switch开关状态的改变 */
    async userStateChanged(userInfo) {
      const { data: res } = await this.$http.put(
        `users/${userInfo.id}/state/${userInfo.mg_state}`
      );
      if (res.meta.status !== 200) {
        userInfo.mg_state = !userInfo.mg_state;
        return this.$message.error("更新用户状态失败");
      }
      this.$message.success("更新用户状态成功");
    },
    //监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields();
    },
    //添加新用户
    addUser() {
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) return;
        const { data: res } = await this.$http.post("users", this.addForm);
        if (res.meta.status !== 201) this.$message.error("添加用户失败！");
        this.$message.success("添加用户成功");
        //隐藏添加用户对话框
        this.addDialogVisible = false;
        //刷新用户列表
        this.getUserList();
      });
    },
    /* 展示编辑用户的对话框 */
    async showEditDialog(id){
      const {data:res} = await this.$http.get('users/'+id)

      if(res.meta.status!==200)
        return this.$message.error('查询用户信息失败！')
      this.editForm=res.data
      this.editDialogVisible=true;
    },
    /* 监听修改用户对话框的关闭事件 */
    editDialogClosed(){
      this.$refs.editFormRef.resetFields()
    },
    editUserInfo(){
      this.$refs.editFormRef.validate(async valid=>{
        if(!valid)  return
        /* 发起修改用户信息的数据请求 */
        const {data:res} = await this.$http.put('users/'+this.editForm.id,{
          email:this.editForm.email,
          mobile:this.editForm.mobile});
        if(res.meta.status!=200)
          return this.$message.error('更新用户信息失败！')
        /* 关闭对话框 */
        this.editDialogVisible=false;
        /* 刷新数据列表 */
        this.getUserList()
        /* 提示修改成功 */
        this.$message.success('更新用户信息成功！')
      })
    },
    async removeUserById(id){
       const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err=>err)
        /* 如果用户确认，则返回字符串confirm
          如果用户取消，则返回字符串cancel
        */
        if(confirmResult!='confirm'){
          return this.$message.info('已取消删除')
        }
        const {data:res}= await this.$http.delete('users/'+id)

        if(res.meta.status!=200)
          return this.$message.error('删除用户失败！')

        this.$message.success("删除用户成功！")
        this.getUserList()
    },
    async setRole(userInfo){
      this.userInfo=userInfo

      /* 获取所有角色列表 */
      const {data:res} = await this.$http.get('roles')
      if(res.meta.status!=200)
        return this.$message.error('获取角色列表失败！')

      this.rolesList=res.data
      this.setRoleDialogVisible=true;
    },
    async saveRoleInfo(){
      if(!this.selectedRoleId)
        return this.$message.error("请选择要分配的角色")
      
      const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`,
      {
        rid:this.selectedRoleId
      })

      if(res.meta.status!==200)
        return this.$message.error("更新用户角色失败！")
      
      this.$message.success("更新角色成功！")
      this.getUserList()
      this.setRoleDialogVisible=false;
    },
    setRoleDialogClosed(){
      this.selectedRoleId=''
      this.userInfo=''
    }
  },
};
</script>

<style scoped>
</style>